Coil winding apparatus

ABSTRACT

Coil winding apparatus includes a stationary device and a movable device, one of the devices including a coil frame of curved noncircular configuration and the other device including a carriage. A mechanism is operatively connected to the movable device for moving it relative to the stationary device. A guide structure is aligned with and has a configuration conforming to that of the coil frame and a pair of guide members carried by the carriage guidingly engages the guide structure so as to thereby guide the movable device, during movement thereof by the moving mechanism, along a path conforming to the configuration of the frame. A supply source for a filamentary structure to be coiled onto the frame is carried by the carriage, and elastic forcestoring means such as a spring urges the guide members and the guide structure into engagement with each other so as to maintain the carriage and coil frame at least approximately at the same orientation one relative to the other and direct the filamentary structure tangentially onto the frame while issuing from the supply source at a location situated at a substantially constant distance from the location where the filamentary structure is wound onto the frame, whereby a substantially constant length of the filamentary structure extends from the supply source tangentially to the frame during winding of the filamentary structure thereon.

United States-Patent [72] Inventor Cord Albrecht Erlangen, Germany [21]App]. No. 559,172 [22] Filed June 21. 1966 [45] Patented Jan. 26. I971[73] Assignee Siemens Aktiengesellschaft Berlin and Erlangen, Germany acorporation of Germany [32] Priority Aug. 31, I965 [33] Germany [3 1899147 [54] COIL WINDING APPARATUS 19 Claims, 8 Drawing Figs.

[52] US. Cl 242/7.07, 242/7.22 [51] Int. Cl 1-10If41/06 [50] Field ofSearch... 242/9, 7, 7P5,11PS,2,3,4,;156/189,457,446

[56] References Cited UNITED STATES PATENTS 2,822,989 2/1958 Hubbard etal. 242/1 1(PS) 2,953,310 9/1960 McLean et a1... 242/7(PS) 3,052,4199/1962 Huck 242/7 3,229,924 1/1966 Vogt 242/7(PS) 3,250,493 5/1966Burkley et al 242/2X 2,415,500 2/1947 Kennison 242/7 Slangal 57/ 1 0XABSTRACT: Coil winding apparatus includes a stationary device and amovable device, one of the devices including a coil frame of curvednoncircular configuration and the other device including a carriage. Amechanism is operatively connected to the movable device for moving itrelative to the stationary device. A guide structure is aligned with andhas a configuration conforming to that of the coil frame and a pair ofguide members carried by the carriage guidingly engages the guidestructure so as to thereby guide the movable device, during movementthereof by the moving mechanism, along a path conforming to theconfiguration of the frame. A supply source for a filamentary structureto be coiled onto the frame is carried by the carriage, and elasticforce-storing means such as a spring urges the guide members and theguide structure into engagement with each other so as to maintain thecarriage and coil frame at least approximately at the same orientationone relative to the other and direct the filamentary structuretangentially onto the frame while issuing from the supply source at alocation situated at a substantially constant distance from the locationwhere the filamentary structure is wound onto the frame, whereby asubstantially constant length of the filamentary structure extends fromthe supply source tangentially to the frame during winding of thefilamentary structure thereon.

sum 1M3 3.558.068

PATENTEU JAMES I97| PATENTFUJANPEIEWI I 3,558 068 sum 2 OF 3 PATENTEDJAN26 I971 SHEET 3 OF 3 "Aw, L

COIL WINDING APPARATUS My invention relates to a coil winding apparatus.

In particular, my invention relates to that type of coil windingapparatus which is used during the manufacture of coils for electricalapparatus. I

My invention deals more specifically with apparatus for windingfilamentary structure onto a coil frame which is curved but is of anoncircular configuration, although along its entire periphery the framehas a radius of curvature, which while of different lengths at differentparts of the frame, nevertheless is of a uniform character all along theframe which carries the filamentary structure of the coil, thisfilamentary structure being, for example, in the form ofa suitable wirewhich is unwound from a supply roll as it is wound onto the frame of thecoil.

With conventional winding apparatus of this type, used, for example, inthe manufacture of coils of elliptical or saddleshaped configuration,considerable difficulties are encoun tered in guiding the wire or thelike during the winding thereof onto the coil. It is only by usingstructures having complex kinematic compensating structure a balanceduniform operation which will provide a coil having a desired uniformitythroughout its structure. Particularly difficult conditions areencountered when winding the wire or the like onto a relatively largecoil frame, such as, for example, an elliptical frame having a major andminor axes respectively on the order of 50 cm. and 30 cm., especiallywhen the wire is relatively fine and has, for example, a diameter on theorder of 0. 1 mm.

Thus, it is a primary object of my invention to provide a coil windingapparatus which will avoid the above drawbacks.

In particular, it is an object of my invention to provide a coil windingapparatus which is simple and operates in a manner far superior to anyconventional coil winding structure while at the same time being capableof winding onto the coil frame the filamentary coil structure which canbe any wire, whether in braided or stranded form, any band structure,any foil structure, etc., so that my invention is applicable to alltypes of filamentary structures in general.

Thus, while avoiding complex units, it is an object of my invention toprovide a structure which is capable of effectively winding a coil, evenone of relatively large dimensions, in such a way that the filamentarycoil structure is uniformly wound throughout the entire coil and isunder a substantially constant tension throughout the entire coil.

A more specific object of my invention is to provide a constructionwhich will reliably maintain the filamentary structure in a positionwhere it is necessarily wound tangentially onto the coil while issuingfrom a suitable supply means such as a supply roll, as pointed outabove.

Furthermore, it is an object of my invention to provide a constructionwhich will maintain the distance of the location where the filamentarystructure unwinds from the supply roll to the location where it is woundtangentially onto the coil substantially constant, so that duringwinding of the filamentary structure on the coil a substantiallyconstant length of the filamentary structure extends between the coiland the supply roll.

It is, therefore, a further object of my invention to provide aconstruction where the direction along which the filamentary structureextends while it is wound onto the coil is in no way influenced by thesupply means from which this filamentary coil structure is obtained.

Yet another object of my invention is to provide between parts whichmove relative to each other during winding of the coil a substantiallyconstant speed, so that in this way a substantially constant tension canbe maintained in the filamentary structure which is wound onto the coil.This maintenance of the constant speed between the relatively movingparts of the apparatus of my invention greatly improves the manner inwhich the filamentary structure is guided onto the coil and in additionbecause the filamentary structure necessarily moves Furthermore, as aresult of the uniform stressing of the wire or the like during windingthereof onto the coil, the danger of undesirable deformations, cracks.or tearing of the wire is avoided and at the same time a uniformpretreatment of the wire can easily and conveniently be provided, such apretreatment being, for example, a heat treatment, covering the wirewith a coating ofa suitable lacquer, providing the wire with a galvaniccoating or with any desired wrapping material which is wrapped aroundthe wire.

The coil winding apparatus of my invention includes a stationary meansand a movable means, one of these means ineluding a coil frame of curvedbut noncircular configuration and the other of these means including acarriage. A moving means is operatively connected to the movable meansfor moving the latter relative to the stationary means, and a guidemeans of my invention is aligned with and has a configuration conformingto that of the coil frame, this guide means guiding the movable means,during movement thereof by the moving means, along a path conforming tothe configuration of the frame. The guide means of my inventionmaintains the carriage and coil frame at least approximately at the sameorientation one relative to the other. A supply means is carried by thecarriage for supplying a filamentary structure which is to be coiledonto the frame, and the guide means of my invention, by maintaining theabove orientation between the car riage and coil frame, directs thefilamentary structure tangentially onto the coil frame while thisfilamentary structure issues from the supply means at a locationsituated at a substantially constant distance from the location wherethe filamentary structure is wound onto the frame. In this way asubstantially constant length of this filamentary structure extends fromthe supply means tangentially to the frame during winding of thefilamentary structure thereon.

My invention is illustrated by way ofexample in the accompanyingdrawings which form part of this a plication and in which:

FIG. la is a transverse section of the structure shown in FIG. lb, FIG.Ia being taken along line Ia-Ia of FIG. lb in the direction of thearrows;

FIG. lb is a sectional schematic side elevation of an apparatus of myinvention, the section of FIG. lb being taken along line lblb of FIG. lain the direction of the arrows;

FIG. 2 is a schematic panly sectional elevation of another embodiment ofa winding apparatus of my invention;

FIG. 3 shows in a transverse section part of the structure of yet afurther embodiment of a winding apparatus of my invention;

FIG. 4a is a transverse section of a further embodiment of a structureof my invention for advancing a coil frame during winding of filamentarystructure thereon;

FIG. 4b is a fragmentary schematic side elevation of the structure ofFIG. 4a;

FIG. 5 is a schematic illustration of yet another embodiment of a coilwinding apparatus of my invention,; and

FIG. 6 is a cross-sectional view of the embodiment of FIG. 5corresponding to the view of the embodiment shown in FIG. 3.

Referring now to FIGS. la and lb, the winding apparatus of my inventionillustrated therein includes a stationary means and a movable means. Inthis embodiment the stationary means includes the schematicallyillustrated carriage 4, while the movable means includes the coil frame1 which in the illustrated example has an elliptical configuration, sothat the coil frame is curved but noncircular. The carriage 4 has aportion 5 which serves to mount on the carriage 4 a supply means 3 forthe filamentary structure to be wound onto the coil. In the illustratedexample this supply means 3 takes the form of a supply roll which issupported for rotary movement and which has a supply of wire 2 thereon,this wire being unwound from the roll 3 and wound onto the frame 1,during operation of the apparatus of my invention.

A guide means of my invention guides the movable means, which in FIGS.Ia and lb includes the coil frame 1, for movement with respect to thestationary means, which in the example of FIGS. Ia and lb includes thecarriage 4, and this guide means takes the form of a pair of coilflanges 6 which conform to the configuration of the coil frame I andextend along the periphery thereof. Thus, in the example of FIGS. la andlb the guide means 6 is fixed to and forms part of the coil frame I,this guide means extending along and forming part of the periphery ofthe coil frame itself. The guide means 6 will func tion to maintain themovable means I and the stationary means 4 at a substantially constantorientation one with respect to the other, this being the orientationshown in FIG. Ib. This orientation is such that the carriage 4 extendsat all times approximately tangentially with respect to the outerperipheral edge of the coil frame 1 formed by the outer edges of theframe flanges 6. These flanges have a constant width so that their outerperipheral edges conform to the configuration of the inner peripheralsurface of the frame I. The supply means 3 is carried by the part 5 ofthe carriage 4 at a location where in the direction of orientation ofthe carriage 4 with respect to the frame 1 the supply means 3 will besituated at a predetermined distance from the frame 1.

The carriage 4 includes a pair of guide members which engage andcooperate with the guide means 6 of the invention, these guide membersin the illustrated example taking the form of rollers 7 and 8. Theroller 7 engages the inner edges of the flanges 6, and thus the innerperiphery of the frame I, while the roller 8 engages the outerperipheral edges of the flanges 6. Springs 9 and 10, diagrammaticallyillustrated in FIG. la, urge the rollers toward each other so as tomaintain them in engagement with the guide means 6. Thus, when themovable means 1 moves with respect to the stationary means 4 of FIGS. Iaand 1b, a straight line which is perpendicular to and intersects theparallel axes of the rollers 7 and 8 will also be perpendicular to thetangent to the periphery of the outer edge of each flange 6 at the placewhere this straight line intersects this periphery. Therefore, any linewhich extends horizontally in FIG. lb and is perpendicular to a straightvertical line passing through the parallel axes of the rollers 7 and 8in FIG. lb will have a tangential relationship with respect to the frame1, and it will be seen that at the point ll the wire 2 extendstangentially in this manner with respect to the frame 1. This point llis the location where the wire is wound onto the coil frame 1, and withthe structure of my invention during winding of the wire 2 onto theframe I it will always have a tangential relationship with respect tothe frame I.

The free movability of the movable means I with respect to thestationary means 4 of FIGS. la and lb is brought about by simplypermitting the frame 1 together with the guide means 6 to be supportedbetween the rollers 7 and 8 without providing any other support for theparts L6 and without restraining movement thereof in any way. Thus, inthis embodiment the carriage 4 remains stationary and the supply roll 3will remain at a predetermined location.

A moving means is operatively connected with the movable means to movethe latter with respect to the stationary means, and in the illustratedexample this moving means takes the form ofa driving motor shaft 12schematically shown in FIG. la and operatively connected with the roller7 to rotate the latter so that as a result of the frictional engagementof the roller 7 with the inner periphery of the frame 1, the latter ismoved with respect to the carriage 4. Thus, the roller 7 functions notonly as a guide member but also as a drive member. By way of a simplecoupling of the driving motor shaft l2 to the roller 7, it is possibleto provide for the roller 7 a uniform speed of rotation so that in thisway a uniform speed of movement of the wire 2 can be achieved. As isapparent from FIG. lb, through this exceedingly simply construction itis possible to achieve all of the requirements for a good guiding of thewire during the winding thereof onto the coil. The wire extendstangentially with respect to the frame 1 at all times so as to be woundonly in a tangential manner onto the coil frame 1, and in addition thedistance between the location II where the wire is tangentially woundonto the coil and the location 13 where the wire issues from the supplymeans 3 remains constant, so that at all times during the windingoperations there is a constant length of wire extending between thelocations I l and 13. As a result of advancing the wire at a constantspeed onto the coil, the wire remains at all times at a constanttension.

In order to make it possible to move the frame 1 into and out of thespace between the rollers 7 and 8 in an extremely simple manner, it ispossible to provide bearings which support the rollers 7 and 8 for 8 forrotary movement on only one side of the rollers 7 and 8. so that theother side thereof is free to provide unobstructed movement of the frameinto and out of the space between the rollers. However. in theillustrated example the roller 7 is removably mounted so that in theillustrated example it is equally convenient simply to remove the roller7. place the frame I, 6 in engagement with the roller 8. and then returnthe roller 7 to the assembly so that the parts will have the positionshown in FIG. lb. Thus, a shaft which has, for example, a splinedconnection with the roller 7 and onto which the springs 9 and 10 arehooked has also a keyed connection with the drive shaft 12. and thisshaft which drives the roller 7 can be slipped out of the latter andthen back through the axial bore of the roller 7 to again have a drivingengagement therewith. It will be noted that the frame members throughwhich the shafts for the rollers 7 and 8 extend are respectively formedwith elongated slots I4 along whichthe shaft for the roller 8 is freelymovable. This shaft is of course connected to the top ends of thesprings 9 and I0, and these springs when fully tensioned with a frame1,6 situated between the rollers will locate the shaft for the roller 8between the ends of the slots 14. The force exerted by the springs 9 and10 through the rollers 7 and 8 on the frame 1 must be at least greatenough so that the frame 1 will at all times have between the rollers aposition providing for a horizontally extending tangent at the point 11,so that in this way the guide means 6 cooperates with the rollers andthe moving means l2,7 cooperates with the frame I to provide for thelatter only rolling contact between the rollers 7 and 8 and no slip.

As is apparent from FIG. lb, the center of gravity of the frame I issituated at a location where the weight G of the frame I together withthe filamentary structure 2 already wound thereon will exert a turningmoment with respect to the carriage 4. In the case where the frame andfilamentary structure thereon are relatively heavy and where aconsiderable moment arm is provided as a result of a substantialeccentricity in the location of the center of gravity of the frame withrespect to the rollers 7 and 8, it becomes necessary to provideextremely powerful springs 9 and 10 as well as to provide very strongbearings for the rollers 7 and 8. Thus, in such case certaindifficulties will be encountered, but these difficulties can be avoidedin a number of ways. For example, the vertical winding plane of FIG. 1bcan be turned through so as to be in a horizontal plane, and thus theweight of the coil frame and the wire wound thereon will exert a forceextending parallel to the axis of the coil frame rather thanperpendicularly to this axis. Thus, all that is required for thispurpose is to arrange the entire structure horizontally rather thanvertically. With such an arrangement it is only necessary to support thecoil frame 1 during the winding operations on a suitable antifrictionstructure such as on suitable rollers or on a support with which thecoil frame can easily slide, so that in this way the above difficultiesare avoided.

However, it is also possible to provide an arrangement as shown in FIG.2, this arrangement permitting the winding plane to be maintained in avertical situation. With the apparatus of my invention which isillustrated in FIG. 2, the carriage 4, which also forms part of thestationary means of this embodiment, has a pair of guide rollers 15 and16 which are tangentially arranged with respect to the guide means 6having a rolling contact with the outer peripheral edges thereof. Aspring 17 presses the guide rollers 15 and 16 against the peripheralguiding edges of the guide means 6. The entire carriage 4 is capable ofswinging in the manner of pendulum about the stationary axis of theshaft 18 on which the roller 7' is mounted. Thus, with this arrangementthe entire carriage 4' can swing in the manner of a pendulum about theshaft 18 so that it will automatically assume at all times a positionwhere the wire 2 will extend tangentially onto the coil frame at thepoint 11'. The spring I7 by maintaining the rollers I5 and I6 inengagement with the guide means 6 will maintain a line in the plane ofFIG. 2 extending through the axes of the rollers and 16 parallel to thedirection in which the wire 2 extends, and this direction is alwaysparallel to a tangent to the outer periphery of each flange 6, so thatin this way the tangency is automatically maintained with the structureof my invention which is illustrated in FIG. 2. The supply means 3' isstill supported for rotary movement by the structure 5' of the carriage4' so that the supply means 3 executes the pendulum motions togetherwith the entire carriage 4, and in this way the substantially constantdistance between the locations ll and I3 is maintained with theembodiment of FIG. 2. Of course, the axis of the driving roller 17 willremain-stationary. With this arrangement of my invention the center ofgravity of the frame 1 is situated at all times directly beneath thedriving roller 7', and in fact beneath the location II where the wire istangentially wound onto the coil and where the inner periphery of thecoil frame I actually engages the roller 7. Thus. it will be noted thatthe frame I does not necessarily engage the roller 7' at the uppermostpart thereof. Because of the noncircular configuration of the frame Iand the guide means 6 the area of engagement between the roller 7' andthe inner periphery of the frame 1 is always situated in alignment withthe point of tangency I1, and the center of gravity is always situatedbeneath this location 11. Thus, with this construction the weight of theframe I together with the wire wound thereon will simply urge the frameI against the roller 7 without any turning moment since the eccentricityhas been eliminated, so that there is no moment arm, and therefore theproblems encountered with an arrangement as shown in FIG. lb areeliminated, so that even in the case where the coil frame 1 and the wirewound thereon are heavy and are of a substantial size, therenevertheless will be no difficulty with the embodiment of FIG. 2. I

Where the coil is of the type which is to be subjected to relativelylarge forces during operation, then" the coil frame must be providedwith a suitable supporting structure having suitably robust dimensionsso as to provide a stable support for the coil. In such a case, it ispossible to simplify the construction by winding the filamentarystructure directly onto the assembly which includes the robust framestructure of the coil instead of first winding the filamentary structureonto a relatively light coil body which subsequently is assembled withthe frame supporting structure. Thus, to take care of this situation therelatively heavy coil frame carrying structure is fixedly clamped on asuitable support and in this case the coil winding apparatus of myinvention provides a movable means which includes the carriage whichruns in the manner of a cable trolley of a lifting crane along the guidemeans which again is capable of being formed by part of the coil itselfas, for example, out of peripheral edges thereof.

A construction of this latter type is illustrated in FIG. 3. FIG. 3shows the rugged and robust frame supporting structure 19 in transversesection. This structure rests on suitable blocks 20 or the like so as tobe supported horizontally, and conventional clamping assemblies 21 areprovided for fixedly clamping the frame 19 on its supporting structure.The frame 19 has surfaces along which the rollers 7 and 8" can advanceas well as surfaces along which the rollers 22 can roll. The drivingroller 7" is operatively connected with the driving motor 23, and theguide roller 8" has its shaft guided through an elongated slot 14" ofthe carriage 4" which directly carries the motor 23 as well as thesupply roll 3", in the manner indicated in FIG, 3. The spring 9" whichdirectly carries the motor 23 as well as the supply roll 3", in themanner indicated in FIG. 3. The spring 9" acts on the shaft of theroller 8" to urge the latter toward the roller 7", and thus the guidemembers 7" and 8" of the carriage 4" of this embodiment are maintainedin rolling contact with the guide means formed by the upper flange oftheframe 19, as viewed in FIG. 3. An elongated flexible cable 24 connectsthe motor 23 with a source of electricity through a suitable slidemember 25 which guides the cable 24 and which is situated centrally overthe frame 19. so that in this way the motor 23 remains in communicationwith its source of energy while driving the rollers 7 so as to advancethe carriage 4" while the stationary means is formed by the coil frame19. The dimensions of the components of the apparatus of my inventionshown in FIG. 3 need only be concerned with the winding operationsthemselves, as well as with the tension of the filamentary structure,and the curvature of the path along which the winding takes place.However, it is completely unnecessary with this embodiment to beconcerned with the weight of the components, since it becomes completelyunnecessary to handle substantial weights with the arrangement of myinvention which is shown in FIG. 3, although a relatively massive coilcan be wound with this construction. I

With the embodiments of my invention which are illustrated in FIGS. l3,the transmission of motion provided by the moving means to the drivingroller for the purpose of advancing the movable means with respect tothe stationary means takes place by way of frictional engagement betweenthe driving roller and the surface with respect to which it has rollingcontact. In the case where a particularly accurate movement of themovable means with respect to the stationary means is required, or inthe case where a relatively great winding tension is required, othertypes of motion transmission may be required. Also, in a situation wherethe coil frame does not provide a sufficient surface for the necessaryfriction drive and guiding of the winding apparatus it may becomenecessary to provide a different type of driving arrangement. Possiblevariations in the driving structure are schematically illustrated on theone hand in FIGS. 40 and 4b, and on the other hand in FIG. 5v

With the arrangement shown in FIGS. 4a and 4b, there is removably fixedto the inner periphery of the coil frame I a belt 26 having teethalong'its inner surface, and driving roller 7 has the configuration of agear meshing with the inner toothed periphery of the belt 26. This belt26 can be releasably fixed with the frame 1 in any suitable way as, forexample, by having at its outer surface recesses which receive pinsfixed to the frame I and extending inwardly therefrom at its innerperiphery into the recesses of the belt 26. With this constructionbecause of the releasable fixing of the toothed belt 26 to the frame I,the rotary deliver member 7" will reliably advance the coil frame 1. Ofcourse, the drive member 7" is in this case also driven from a suitableelectric motor.

With the winding apparatus of my invention which is schematicallyillustrated in FIG. 5 and shown in section in FIG. 6 the carriage againforms part of the movable means, as was the case with FIG. 3. In thiscase, however, the carriage 4 includes a pair of slide members 27 and 28which form the guide members and which cooperate by sliding contact withthe guide means, these slide members27 and 28 having a tangentialsliding contact with respect to the guide means which extends along andconforms to the configuration of the coil frame, as pointed out above.In this case it is the carriage 4" which forms a passive element actedupon to be advanced with respect to the coil frame which forms thestationary means of this embodiment. The drive takes place in theillustrated example through a motion-transmitting pin 29 which isconnected with the carriage 4" and'which is also connected with andextends from a drive chain 30 in the form of an endless sprocket chain,for example, positioned on suitable guiding sprockets so that it willhave a configuration conforming to that of the coil frame, and alignedwith and extending along the coil frame in the manner shown in FIG. 5.One of the sprockets is driven by a suitable motor so that the sprocketchain 30 advances without changing its position in space, and thus themotion transmitting pin 29 will serve to advance the carriage 4" aroundthe coil frame while the guide members 27 and 28 cooperates slidablywith the guide means to maintain the orientation referred to above.Thus, the drive chain 30 can have a configuration conforming to that ofthe frame but being smaller than the latter in the case where it issituated at the interior of the frame, or it may have a larger size thanthe frame in the case where it is situated at the exterior thereof,although it is also possible to situate the drive chain in other planeseither above or below the coil from where the latter is arrangedhorizontally or before or behind the coil frame where the latter isarranged vertically.

lclaim:

I. In a coil winding apparatus, stationary means and movable means, oneof said means including a coil frame of curved but noncircularconfiguration and the other of said means including a carriage, movingmeans operatively connected to said movable means for moving the latterrelative to said stationary means, guide means aligned with and having anoncircular configuration conforming to that of said coil frame, a pairof guide members carried by said carriage and guidingly engaging saidguide means so as to thereby guide said movable means, during movementthereof by said moving means, along a path conforming to theconfiguration of said frame, supply means carried by said carriage infront of said guide members in the direction of movement of said movablemeans for supplying a filamentary structure to be coiled onto saidframe, and elastic force-storing means urging said guide members andsaid guide means into engagement with each other so as to maintain saidcarriage and coil frame at least approximately at the same orientationone relative to the other and direct said filamentary structuretangentially onto said frame at a location between said guide memberswhile issuing from said supply means at a location situated at asubstantially constant distance from the location where said filamentarystructure is wound onto said frame, whereby a substantially constantlength of said filamentary structure extends from said supply meanstangentially to said frame during winding of the filamentary structurethereon.

2. The combination of claim l and wherein said supply means includes arotary supply roll from which the filamentary structure unwinds.

3. The combination of claim I and wherein said guide means is fixed toand forms part of said frame, said guide means extending along andforming a peripheral portion of said frame.

4. The combination of claim 1 and wherein said guide members of saidcarriage comprise substantially straight slide members which slidablyengage said guide means.

5. The combination of claim 1 and wherein said guide members of saidcarriage comprise a pair of guide rollers having rolling contact withsaid guide means.

6. The combination of claim 5 and wherein said elastic force-storingmeans comprises a spring urging said rollers and guide means intoengagement with each other.

7. The combination of claim 1 and wherein said guide means is fixed toand forms an inner peripheral portion of said frame.

8. The combination of claim I and wherein said frame has a radiallyinner wall on which said filamentary structure is wound and said frameincludes a flange of uniform width ex tending outwardly beyond and fixedto said inner wall and terminating in an outer peripheral edge whichforms said guide means.

9. The combination of claim 8 and wherein said frame has an innerperiphery directed inwardly away from said outer edge of said flange andsaid carriage has guide members which respectively engage said inner andouter peripheries of said frame.

10. The combination of claim 9 and wherein said guide members arerespectively in the form of rollers turnably carried by said carriageand having rolling contact with said frame.

ll. The combination of claim 10 and wherein said moving means isoperatively connected with one of said rollers for rotating the latterto displace said movable means with respect to said stationary means.

12. The combination of claim 11 and wherein said movable means includessaid carriage which travels along said frame.

13. The combination of claim 11 and wherein said movable means includessaid frame which moves relative to said carriage.

14. The combination. of claim 1 and wherein said movable means includessaid frame, said frame having an inner toothed periphery and said movingmeans including a rotary gear en gaging said inner toothed periphery fordisplacing said frame.

15. The combination of claim 1 and wherein said movable means includessaid carriage, said moving means including a drive chain having aconfiguration conforming to that of said guide means and connected withsaid carriage, and said moving means displacing said chain whilemaintaining it at a configuration conforming to that of said guide meansso as to displace said carriage with respect to said frame.

16. The combination of claim 1 and wherein said carriage includes arotary supporting roller on which said frame is supported.

17. The combination of claim 15 and wherein said frame is supported onsaid supporting roller so that its center of gravity is always situatedbeneath said supporting roller.

18. The combination of claim 1 and wherein said frame is positioned in asubstantially horizontal plane during winding of said filamentarystructure thereon.

l9. Combination of claim 18 and wherein said horizontally positionedframe is part of said stationary means and supports said carriage formovement along said frame.

1. In a coil winding apparatus, stationary means and movable means, oneof said means including a coil frame of curved but noncircularconfiguration and the other of said means including a carriage, movingmeans operatively connected to said movable means for moving the latterrelative to said stationary means, guide means aligned with and having anoncircular configuration conforming to that of said coil frame, a pairof guide members carried by said carriage and guidingly engaging saidguide means so as to thereby guide said movable means, during movementthereof by said moving means, along a path conforming to theconfiguration of said frame, supply means carried by said carriage infront of said guide members in the direction of movement of said movablemeans for supplying a filamentary structure to be coiled onto saidframe, and elastic force-storing means urging said guide members andsaid guide means into engagement with each other so as to maintain saidcarriage and coil frame at least approximately at the same orientationone relative to the other and direct said filamentary structuretangentially onto said frame at a location between said guide memberswhile issuing from said supply means at a location situated at asubstantially constant distance from the location where said filamentarystructure is wound onto said frame, whereby a substantially constantlength of said filamentary structure extends from said supply meanstangentially to said frame during winding of the filamentary structurethereon.
 2. The combination of claim 1 and wherein said supply meansincludes a rotary supply roll from which the filamentary structureunwinds.
 3. The combination of claim 1 and wherein said guide means isfixed to and forms part of said frame, said guide means extending alongand forming a peripheral portion of said frame.
 4. The combination ofclaim 1 and wherein said guide members of said carriage comprisesubstantially straight slide members which slidably engage said guidemeans.
 5. The combination of claim 1 and wherein said guide members ofsaid carriage comprise a pair of guide rollers having rolling contactwith said guide means.
 6. The combination of claim 5 and wherein saidelastic force-storing means comprises a spring urging said rollers andguide means into engagement with each other.
 7. The combination of claim1 and wherein said guide means is fixed to and forms an inner peripheralportion of said frame.
 8. The combination of claim 1 and wherein saidframe has a radially inner wall on which said filamentary structure iswound and said frame includes a flange of uniform width extendingoutwardly beyond and fixed to said inner wall and terminating in anouter peripheral edge which forms said guide means.
 9. The combinationof claim 8 and wherein said frame has an inner periphery directedinwardly away from said outer edge of said flange and said carriage hasguide members which respectively engage said inner and outer peripheriesof said frame.
 10. The combination of claim 9 and wherein said guidemembers are respectively in the form of rollers turnably carried by saidcarriage and having rolling contact with said frame.
 11. The combinationof claim 10 and wherein said moving means is operatively connected withone of said rollers for rotating the latter to displace said movablemeans with respect to said stationary means.
 12. The combination ofclaim 11 and wherein said movable means includes said carriage whichtravels along said frame.
 13. The combination of claim 11 and whereinsaid movable means includes said frame which moves relative to saidcarriage.
 14. The combination of claim 1 and wherein said movable meansincludes said frame, said frame having an inner toothed periphery andsaid moving means including a rotary gear engaging said inner toothedperiphery for displacing said frame.
 15. The combination of claim 1 andwherein said movable means includes said carriage, said moving meansincluding a drive chain having a configuration conforming to that ofsaid guide means and connected with said carriage, and said moving meansdisplacing said chain while maintaining it at a configuration conformingto that of said guide means so as to displace said carriage with respectto said frame.
 16. The combination of claim 1 and wherein said carriageincludes a rotary supporting roller on which said frame is supported.17. The combination of claim 15 and wherein said frame is supported onsaid supporting roller so that its center of gravity is always situatedbeneath said supporting roller.
 18. The combination of claim 1 andwherein said frame is positioned in a substantially horizontal planeduring winding of said filamentary structure thereon.
 19. Combination ofclaim 18 and wherein said horizontally positioned frame is part of saidstationary means and supports said carriage for movement along saidframe.